<html>
<head>
    <meta charset="utf-8">
    <link href="../assets/global/plugins/bootstrap/css/bootstrap.min.css" rel="stylesheet" type="text/css"/>
    <link href="../assets/global/css/components.css" rel="stylesheet" type="text/css"/>
    <link href="../assets/admin/pages/css/login.css" rel="stylesheet" type="text/css"/>
    <script src="../assets/global/plugins/jquery-1.11.0.min.js" type="text/javascript"></script>
</head>

<body class="login">
<div class="content">
    <h3 class="form-title">商品详情</h3>
    <div id="promoStartDateContainer" class="form-group">
        <label style="color:red" class="control-label">秒杀开始时间</label>
        <div>
            <label style="color:red" class="control-label" id="promoStartDate"></label>
        </div>
    </div>
    <div class="form-group">
        <div>
            <label class="control-label" id="title"></label>
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">商品描述</label>
        <div>
            <label class="control-label" id="description"></label>
        </div>
    </div>
    <div id="normalPriceContainer" class="form-group">
        <label class="control-label">商品价格</label>
        <div>
            <label class="control-label" id="price"></label>
        </div>
    </div>
    <div id="promoPriceContainer" class="form-group">
        <label style="color:red" class="control-label">秒杀价格</label>
        <div>
            <label style="color:red" class="control-label" id="promoPrice"></label>
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">商品库存</label>
        <div>
            <label class="control-label" id="stock"></label>
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">商品图片</label>
        <div>
            <img style="width: 200px;height: auto" id="imgUrl"/>
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">商品销量</label>
        <div>
            <label class="control-label" id="sales"></label>
        </div>
    </div>
    <div class="form-group">
        <button class="btn blue" id="createorder" type="submit">
            下单
        </button>
    </div>
</div>
</body>

<script>
    function getparam(paramName) {
        paramValue = "", isFound = !1;
        if (this.location.search.indexOf("?" == 0 &&
            this.location.search.indexOf("=") > 1)) {
            arrSource = unescape(this.location.search).substring(1, this.location.search.length).split("&"), i = 0;
            while (i < arrSource.length && !isFound)
                arrSource[i].indexOf("=") > 0
                && arrSource[i].split("=")[0].toLowerCase() == paramName.toLowerCase()
                && (paramValue = arrSource[i].split("=")[1], isFound = !0), i++;
        }
        return paramValue == "" && (paramValue = null), paramValue;
    }

    var g_itemVO = {};

    jQuery(document).ready(function () {

        $("#createorder").on("click", function () {
            $.ajax({
                type: "POST",
                url: "http://localhost:8090/order/createorder",
                contentType: "application/x-www-form-urlencoded",
                data: {
                    "itemId": g_itemVO.id,
                    "amount": 1,
                    "promoId": g_itemVO.promoId
                },
                xhrFields: {withCredentials: true},
                success: function (data) {
                    if (data.status == "success") {
                        alert("下单成功！");
                        window.location.reload(); // 刷新页面，更新库存和销量
                    } else {
                        alert("下单失败，原因为" + data.data.errMsg);
                        if (data.data.errCode == 20003) {
                            window.location.href = "./login.html";
                        }
                    }
                },
                error: function (data) {
                    alert("下单失败，原因为" + data.responseText);
                }
            });

        });

        // 获取商品详情
        $.ajax({
            type: "GET",
            url: "http://localhost:8090/item/get",
            data: {
                "id": getparam("id"),
            },
            xhrFields: {withCredentials: true},
            success: function (data) {
                if (data.status == "success") {
                    g_itemVO = data.data;
                    reloadDom();
                    // 设置定时器，每隔一秒钟执行一次，活动开始自动
                    setInterval(relaodDom, 1000);
                } else {
                    alert("获取信息失败，原因为" + data.data.errMsg);
                }
            },
            error: function (data) {
                alert("获取信息失败，原因为" + data.responseText);
            }
        });
        return false;
    });

    function reloadDom() {

        $("#title").text(g_itemVO.title);
        $("#description").text(g_itemVO.description);
        $("#stock").text(g_itemVO.stock);
        $("#price").text(g_itemVO.price);
        $("#imgUrl").attr("src", g_itemVO.imgUrl);
        $("#sales").text(g_itemVO.sales);

        if (g_itemVO.promoStatus == 1) {
            //秒杀活动还未开始
            var startTime = g_itemVO.startDate.replace(new RegExp("-", "gm"), "/");
            startTime = (new Date(startTime)).getTime();
            var nowTime = Date.parse(new Date());
            var delta = (startTime - nowTime) / 1000;
            if (delta <= 0) {
                //活动已开始
                g_itemVO.promoStatus = 2;
                reloadDom();
            }
            $("#promoStartDate").text("秒杀活动将于：" + g_itemVO.startDate + "开始！倒计时：" + delta + "秒！");
            $("#promoPrice").text(g_itemVO.promoPrice);

            $("#createorder").attr("disabled", true);
        } else if (g_itemVO.promoStatus == 2) {
            //秒杀正再进行中
            $("#promoStartDate").text("秒杀活动正在进行中！");
            $("#promoPrice").text(g_itemVO.promoPrice);

            $("#createorder").attr("disabled", false);
            $("#normalPriceContainer").hide();
        }
    }
</script>

</html>